CAS Number: 10034-85-2
Linear Formula: HI
Molecular Weight: 127.91
IUPAC Name: Hydroiodic acid
Other Names: Hydriodic acid, Hydronium iodide
Hydroiodic acid (or hydriodic acid) is a highly acidic aqueous solution of hydrogen iodide (HI) (concentrated solution usually 48 - 57% HI). It is the second strongest hydrohalic acid, after hydroastatic acid.
Hydroiodic acid is a commonly used chemical reagent and is one of the strong acids that ionize completely in an aqueous solution. Concentrated hydroiodic acid has a pH of less than 0.
